mail_helper.php

<?php
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

require __DIR__ . '/mailer/PHPMailer.php';
require __DIR__ . '/mailer/SMTP.php';
require __DIR__ . '/mailer/Exception.php';

function sendMail($to, $subject, $message) {

    $mail = new PHPMailer(true);

    try {
        // SMTP CONFIG
        $mail->isSMTP();
        $mail->Host = 'smtp.gmail.com';
        $mail->SMTPAuth = true;

        $mail->Username = 'ishrakhansocmacs@gmail.com';   // your Gmail
        $mail->Password = 'dnkw godk neei dtic';     // app password

        $mail->SMTPSecure = 'tls';
        $mail->Port = 587;

        // EMAIL DETAILS
        $mail->setFrom('ishrakhansocmacs@gmail.com', 'SOCMACS Portal');
        $mail->addAddress($to);

        $mail->isHTML(true);
        $mail->Subject = $subject;
        $mail->Body = $message;

        return $mail->send();

    } catch (Exception $e) {
        return false;
    }
}